Do you realize that you are lying on a fitted sheet for about 6 to 8 hours a night? So it is important that you have a good fitted sheet. This Mineral Green Elementi fitted sheet by Heckett Lane ensures a wonderfully soft sleeping comfort. The fitted sheet is made of 100% cotton satin (thread count 240), this material wrinkles less quickly than a “regular cotton” fitted sheet. The fitted sheet feels wonderfully warm in winter and nice and fresh in summer. The material is temperature and moisture regulating. The maximum mattress thickness is 35 cm.